QB Issue Resolution:

You can download the sample file under the Import products and services page. It contains all the fields available in QuickBooks Online.

The fields showed during the import process is from the file used. You can click the drop-down beside Quantity On Hand and manually select the field you have.

I have attached screenshots below for your reference.

Resolution for Issue 'Cant see the quote field when wanting to import my products.' available: Yes (Solved).
Source: Intuit Community forum.

Cant see the quote field when wanting to import my products.: this issue or error code is a known issue in Quickbooks Online (QBO) and/or Quickbooks. Support for this issue is available either by self-service or paid support options. Experts are available to resolve your Quickbooks issue to ensure minimal downtime and continue running your business. First try to resolve the issue yourself by looking for a resolution described below. If it is a complex issue or you are unable to solve the issue, you may contact us by clicking here or by using other support options.

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